ダイガク ジョシ バスケットボール キョウギ ニオケル チーム トクチョウ ノ ブンセキ ニツイテ

バスケットボール競技における重要な要素として対戦チームの特徴を把握することがあげられる．そこで本研究は，女子学生バスケットボールリーグ戦を対象としてチームの特徴を明らかにすることを目的とした．調査方法として，Z 地区大学女子学生リーグ戦におけるスタッツを収集し，チームの特徴を明らかにするために主成分分析を用いた．分析の結果，チーム特徴として13分析項目から 4 主成分が抽出され，各主成分得点順にチームを分類し特徴の調査を行なった結果，第 1 主成分では，攻撃戦術の有効性といった競技成績に関連する特徴が抽出された．第 2 主成分においてはチームの戦術展開に関する特徴及び，所属している選手の特徴が抽出された．第 3 及び，第 4 主成分では，防御行為を狙う特徴及び，その防御行為の危険性に関する特徴が抽出された．今回の調査で抽出されたチームの特徴について優先的に分析を行うことが試合展開を有利にするために重要であると考える

Effects of MgO Catalyst on Depolymerization of Poly-L-lactic Acid to L,L-Lactide

To control the depolymerization of poly-L-lactic acid (PLLA) into L,L-lactide, effects of altering the physical and chemical properties of magnesium oxide (MgO) on its ability as a catalyst were investigated. Four kinds of MgO particles: MgO-heavy, 0.2, 0.05, and 0.01μm, were used having primary particles of different dimensions, surface areas, and chemical structures/species. Thermo-gravimetric profiles of PLLA/MgO composites shifted into a lower temperature range due to an increase in the catalytic surface area resulting from a decrease in the dimensions of the MgO particles. However, decreasing the dimensions caused frequent side reactions with unfavorable products: cyclic oligomers and meso-lactide, due to the presence of different chemical structures/species. Heat treatment of the MgO particles effectively suppressed the oligomer production and enhanced the L,L-lactide production, but also accelerated the meso-lactide production at lower temperatures. These results indicate that the surface properties of MgO considerably influence the depolymerization of PLLA, with the catalytic behavior of MgO controllable by heat treatment and selection of the depolymerization conditions

Racemization Behavior of L,L-Lactide during Heating

To control the depolymerization process of poly (L-lactic acid) into L,L-lactide for feedstock recycling, the racemization of L,L-lactide as a post-depolymerization reaction was investigated. In the absence of a catalyst, the conversion to meso-lactide increased with increase in the heating temperature and time at a higher rate than the conversion into oligomers. The resulting high composition of meso-lactide suggests that the direct racemization of L,L-lactide had occurred in addition to the known racemization mechanism that occurs on the oligomer chains. In the presence of MgO, the oligomerization rapidly proceeded to reach an equilibrium state between monomers and oligomers. The equilibrium among L,L-, meso-, and D,D-lactides was found to be a convergent composition ratio: L,L-:meso-:D,D-lactides = 1:1.22:0.99 (wt/wt/wt) after 120 min at 300 °C. This composition ratio also indicates that, in addition to the known racemization reaction on the oligomer chains, direct racemization among the lactides is also a frequent occurrence

ウンドウブ カツドウ ニ オケル シドウ ホウホウ ニ ツイテ ノ イチコウサツ

本研究では、運動部の生徒の意欲や自主性を生み出すために有効的な指導方法について、Deci、Ryan が提唱する自己決定理論に基づき、「動機づけ」の大切さを、外発的な動機づけと、内発的な動機づけについての比較をもって分析した。さらに、動機づけに対する指導者の役割と影響力について、Mageau、Vallerand らの理論をもとに考察を加えた。そして、その結果として、生徒の意欲や自主性を生み出すためには、動機づけを内発的に高めることへの重要性が明らかとなった。また、動機づけは、個人の心理状態による変化だけではなく、周囲を取り巻く環境によっても変化することから、運動部の活動において、指導者が生徒の動機づけに与える影響の大きさが示されることとなった。今後、指導者による生徒の動機づけの内在化(自律性)を促す行動、環境を整える手法として、自律性支援行動を運動部活動の指導に取り入れ、実践していくことが期待される

Enhanced biogas production from palm oil mill effluent supplemented with untreated oil palm empty fruit bunch biomass with a change in the microbial community

The biogas and biomethane production in a 50 litre closed stirred tank anaerobic bioreactor treating palm oil mill effluent (POME) supplemented with oil palm biomass in the form of oil palm empty fruit bunch (OPEFB) under mesophilic condition was evaluated. With OPEFB supplementation, the biogas and biomethane generation increased by 63% and 52%, respectively. During this process, we found changes in the OPEFB morphology and microbial community through microbiota analysis using 16S rRNA gene clone library method, after OPEFB was added, suggesting that the increased biogas and biomethane production would be due to enhanced lignocellulosic biomass degradation

Predictive Value of the Cardio-Ankle Vascular Index for Cardiovascular Events in Patients at Cardiovascular Risk

BACKGROUND: Arterial stiffness is an important predictor of cardiovascular events; however, indexes for measuring arterial stiffness have not been widely incorporated into routine clinical practice. This study aimed to determine whether the cardio-ankle vascular index (CAVI), based on the blood pressure-independent stiffness parameter beta and reflecting arterial stiffness from the origin of the ascending aorta, is a good predictor of cardiovascular events in patients with cardiovascular disease risk factors in a large prospective cohort. METHODS AND RESULTS: This multicenter prospective cohort study, commencing in May 2013, with a 5-year follow-up period, included patients (aged 40-74 years) with cardiovascular disease risks. The primary outcome was the composite of cardiovascular death, nonfatal stroke, or nonfatal myocardial infarction. Among 2932 included patients, 2001 (68.3%) were men; the mean (SD) age at diagnosis was 63 (8) years. During the median follow-up of 4.9 years, 82 participants experienced primary outcomes. The CAVI predicted the primary outcome (hazard ratio, 1.38; 95% CI, 1.16-1.65; P CONCLUSIONS: This large cohort study demonstrated that the CAVI predicted cardiovascular events

Heliocentric Distance Dependence of Zodiacal Light Observed by Hayabusa2#

Zodiacal light (ZL) is sunlight scattered by interplanetary dust particles (IDPs) at optical wavelengths. The spatial distribution of IDPs in the Solar System may hold an important key to understanding the evolution of the Solar System and material transportation within it. The number density of IDPs can be expressed as $n(r) \sim r^{-\alpha}$, and the exponent $\alpha \sim 1.3$ was obtained by previous observations from interplanetary space by Helios 1/2 and Pioneer 10/11 in the 1970s and 1980s. However, no direct measurements of $\alpha$ based on ZL observations from interplanetary space outside Earth's orbit have been performed since then. Here, we introduce initial results for the radial profile of the ZL at optical wavelengths observed over the range 0.76-1.06 au by ONC-T aboard the Hayabusa2# mission in 2021-2022. The ZL brightness we obtained is well reproduced by a model brightness, although there is a small excess of the observed ZL brightness over the model brightness at around 0.9 au. The radial power-law index we obtained is $\alpha = 1.30 \pm 0.08$, which is consistent with previous results based on ZL observations. The dominant source of uncertainty arises from the uncertainty in estimating the diffuse Galactic light (DGL).Comment: 22 pages, 19 figures, 4 tables, accepted for publication by Earth, Planets and Spac

In-depth analysis of the single grain from the C-type asteroid Ryugu utilizing linkage microanalytical instruments planed by Phase 2 curation “Team Kochi”

The Tenth Symposium on Polar Science/Special session: [OA] Antarctic meteorites, Thur. 5 Dec. / 3F Multipurpose conference room, National Institute of Polar Researc